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580 Chestnut St, San Carlos, CA 94070 Property Records

San Mateo County property record for 580 Chestnut St, San Carlos, CA 94070

Property Summary

Property TypeCare Home (Retirement, Nursing, Convalescent)
Details4,800 sqft · built 1946
Lot Size1.38 acres (60,548 sqft)
OwnerCompany Name on Record
Tax Bill$14,336 (2025)
Deeds & MortgagesApr 2019 Transfer
Apr 2019 Transfer
Flood ZoneZone X (minimal risk)
APN050-061-110

Property Details

APN / Parcel Number

Primary APN050-061-110

Interior

Units2 Units
Building Area4,800 sqft

Exterior

Year BuiltBuilt 1946
Effective Year BuiltEffective 1946
Lot Area60,548 sqft
Lot Dimensions100 ft deep x 55 ft wide

Location & Zoning

Street Address580 CHESTNUT ST
CitySAN CARLOS
StateCA
Zip94070-2134
Property CategoryCommercial
Property TypeCommercial > Retail > Care Home (Retirement, Nursing, Convalescent)
Local Zoning CodeR4
Legal Description55 FT ON SAN CARLOS AVE X 100 FT ON CHESTNUT ST ARBIT LOT 7 SAN CARLOS UNREC SUB OF 1.39 ACRE TRACT OF CORDES ET AL
Legal SubdivisionSAN CARLOS
Legal Lot Number7
JurisdictionSAN MATEO CA
Township / Civil DivisionSAN MATEO
Census Block Group3
Census Block3009
Census Tract609202

Owner

Source: San Mateo County records, as of October 7, 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of RecordCompany Name on Record
Mailing Address162 HIGHLAND AVE, SAN CARLOS, CA 94070-1909
Owner TypeCompany
VestingLimited Liability Partnership

Deeds, Mortgages & Sale History

DateDocument
Apr 4, 2019Quit Claim Deed, Transfer
ATTORNEY ONLY
Apr 4, 2019Affidavit of Death, Transfer
ATTORNEY ONLY

Assessor's Deed Record

Deed NamesName on Deed
Last Transfer DateMar 29, 2019
Transfer Doc0000024120
Record UpdatedOct 29, 2026

April 2019: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionSAN MATEO CA
Recording DateApr 4, 2019
Property Address580 CHESTNUT ST, SAN CARLOS, CA 94070-2134
Document Number0000024120
Instrument DateMar 29, 2019
Instrument24120
Transaction TypeTransfer
Record UpdatedApr 24, 2019
Title CompanyATTORNEY ONLY

Transaction

Tax$0.00
Additional
  • Quitclaim
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipRevocable Trust
Address162 HIGHLAND AVE SAN CARLOS CA 940701909, SAN CARLOS, CA 94070-1909

April 2019: Affidavit of Death, Transfer

Document TypeAffidavit of Death
JurisdictionSAN MATEO CA
Recording DateApr 4, 2019
Property Address580 CHESTNUT ST, SAN CARLOS, CA 94070-2134
Document Number0000024119
Instrument DateMar 29, 2019
Instrument24119
Transaction TypeTransfer
Record UpdatedApr 24, 2019
Title CompanyATTORNEY ONLY

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipPersonal Trust
Address162 HIGHLAND AVE SAN CARLOS CA 940701909, SAN CARLOS, CA 94070-1909

Tax Assessment & Valuation

Source: San Mateo County assessment roll, as of July 15, 2026

Property Jurisdictions

TypeName
StateCalifornia
CountySan Mateo County
MunicipalitySan Carlos City
Elementary School DistrictSan Carlos Elementary School District (KG - 08)
Secondary School DistrictSequoia Union High School District (09 - 12)

Tax Bill & Assessment History

YearTax BillAssessed Value
2026$1,037,433 (+2%) Land $370,942 Building $666,491
2025$14,336.00 (+1.14%)$1,017,092 (+4.04%) Land $363,669 Building $653,423
2024$14,174.00 (+3.76%)
2023$13,660.00 (+2.08%)$977,599 Land $349,549 Building $628,050
2022$13,382.00

Assessed value is set for property tax purposes and is not a market price estimate.

Flood

Source: FEMA National Flood Hazard Layer, effective September 10, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood ZoneZone X
minimal risk
Flood Insurance RequirementNot required
lenders may require it
Community Rating SystemClass 9 (5% premium discount)
Nearby Flood Policies15 units insured
incl. 15 condo units
Nearby Flood Claims1 (2023)
Claims Outside the SFHA1 of 1
Most Recent ClaimJan 2023 · Severe Winter Storms, Flooding, Landslides, And Mudslides

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire RiskNot rated
no burnable land within ember reach

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water SystemCALIFORNIA WATER SERVICE - SAN CARLOS
private · serves 34,801 people · EPA ID CA4110007
Water SourcePurchased surface water from several systems
Last State InspectionSep 2024
Lead6 ppb (2022–2024)
action level 15 ppb

Violations Reported to EPA

Water QualityNone
last 10 years
Treatment and ProcedureNone
last 10 years
Monitoring and ReportingNone
last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.

Internet Providers

Source: FCC Broadband Data Collection, based on 809 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
AT&T
Fiber · DSL in parts of the area		5,000 / 5,000
Xfinity
Cable		2,000 / 250
Sonic Telecom
Fiber		1,000 / 1,000
Verizon
Fixed Wireless		300 / 20
T-Mobile
Fixed Wireless		100 / 20

May also be available: Etheric Networks, GeoLinks.

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